工作流 /
视频工具 /
视频放大: SeedVR2 3B Int8
视频放大: SeedVR2 3B Int8
Video Upscale: SeedVR2 3B Int8
使用SeedVR2 3B Int8（一种单步扩散模型）放大和修复视频素材，该模型可在保持帧间时间一致性的同时提升分辨率。此工作流接受一个降质视频作为输入，并输出一个高分辨率修复视频。适用于修复老旧或降质素材、放大低分辨率视频以及增强存档媒体。
视频工具
5 个节点 1 个输入 550 次使用 ComfyUI ≥ 0.28.0 ComfyUI 47 KB
需要的权重
这个工作流引用了 2 个权重文件，其中 2 个能在本站模型库里找到。
节点构成
MarkdownNote
× 2
1970dcb4-982a-4c01-a373-4d239a3041e4
× 1
LoadVideo
× 1
SaveVideo
× 1
官方标注的模型
SeedVR2
工作流 JSON
和上面「下载工作流 JSON」是同一份文件。
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243 "Guide: [Subgraph](https://docs.comfy.org/interface/features/subgraph)\n\n## Model Links\n\n- [Hugging Face:Comfy-Org/SeedVR2](https://huggingface.co/Comfy-Org/SeedVR2)\n\n**ModelScope mirrors** (alternative repo location)\n\n- [ModelScope:Comfy-Org/SeedVR2](https://modelscope.cn/models/Comfy-Org/SeedVR2)\n\n**vae**\n\n- [seedvr2_ema_vae_fp16.safetensors](https://huggingface.co/Comfy-Org/SeedVR2/resolve/main/vae/seedvr2_ema_vae_fp16.safetensors) (478.1 MB)\n\n**diffusion_models**\n\n- [seedvr2_3b_int8_convrot.safetensors](https://huggingface.co/Comfy-Org/SeedVR2/resolve/main/diffusion_models/seedvr2_3b_int8_convrot.safetensors) (3.22 GB)\n\n## Model Storage Location\n\n```\n📂 ComfyUI/\n├── 📂 models/\n│ ├── 📂 vae/\n│ │ └── seedvr2_ema_vae_fp16.safetensors\n│ └── 📂 diffusion_models/\n│ └── seedvr2_3b_int8_convrot.safetensors\n```\n\n## Report Issue\n\nNote: Please update ComfyUI first ([guide](https://docs.comfy.org/installation/update_comfyui)) and prepare required models. Desktop/Cloud updates follow stable releases, so some nightly-supported models may not be available yet.\n\n- Cannot run / runtime errors: [ComfyUI/issues](https://github.com/comfyanonymous/ComfyUI/issues)\n- UI / frontend issues: [ComfyUI_frontend/issues](https://github.com/Comfy-Org/ComfyUI_frontend/issues)\n- Workflow issues: [workflow_templates/issues](https://github.com/Comfy-Org/workflow_templates/issues)\n"
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267 "## SeedVR2\n\nOne-step video restoration / upscale (ICLR 2026). This workflow uses the **3B Int8** model for video upscaling.\n\n- Project: [SeedVR2](https://iceclear.github.io/projects/seedvr2/)\n- ComfyUI native support: [PR #14424](https://github.com/Comfy-Org/ComfyUI/pull/14424)\n\n### Subgraph parameters\n\n- **trim_video**: enable to cut a segment before upscaling\n- **trim_start_time / duration**: trim start (seconds) and length\n- **scale_multiplier**: upscale factor (default `2`)\n- **seed / sampler / scheduler / denoise**: sampling controls; `denoise=1` means full restore\n- **color_correction_method**: optional color match to original (default `none`)\n- **unet_name / vae_name**: model files to load\n\n### Tip: long videos\n\nIf the input is too long, turn on **trim_video**, upscale in shorter segments, then merge them. This helps avoid OOM / slowdowns on long clips.\n"
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